Bug#293830: Equivs of sudo is enough

[William Ballard]

synpatic does not require gksudo or sudo to run; it only
requires gksu

for now I am simply removing gksu since I don't use synaptic
or anything which requires it.

However if I hit a snag in future I will simply install a fake
sudo with equivs.  I don't need to expose my system to a potential
attack surface when I don't need it.

There is a good reason why su is packaged separate from sudo.

So, okay, don't don't have a secure by design package.
I just won't use it :-) or if I have to later I'll cheat.

sudo is not necessary and should not be in there unless you
want it.

Maybe if I get a burr up my butt I'll try to split the packaging,
but an fake equivs sudo is enough.